Date: Mon, 19 Apr 2004 14:55:00 +0800 From: Zhang Weiwu <zhangweiwu@realss.com> To: freebsd-questions@freebsd.org Subject: Re: sshd: cannot disable password authentication, users canalwayslogin with password. Message-ID: <408377C4.30209@realss.com> In-Reply-To: <40837426.8090700@realss.com> References: <40837426.8090700@realss.com>
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Okay, I figured out the problem myself. I should set ChallengeResponseAuthentication no to disable password authentication. Zhang Weiwu wrote: > Hello. I'm today following the FreeBSD security how to > <http://www.it.daemonnews.org/200108/security-howto.html>; to secury my > FreeBSD server. I configured dsa ssh access, now I can use my own > computer to login to the server with ssh with dsa no problem, no > password authentication is necessary. Following the guide I edit > /etc/ssh/sshd_config and made sure > > PasswordAuthentication no > > But I tried restart sshd and even reboot the server, I can always > login with password on any other computer. > > Please drop me a hint. > > Here is my server's configuration: > > > uname -a > FreeBSD dino.realss 5.2-RELEASE FreeBSD 5.2-RELEASE #0: Sun Feb 29 > 04:29:22 CST 2004 > zhangweiwu@dino.realss:/usr/src/sys/i386/compile/DINO i386 > > cat /etc/ssh/sshd_config > # $OpenBSD: sshd_config,v 1.59 2002/09/25 11:17:16 markus Exp $ > # $FreeBSD: src/crypto/openssh/sshd_config,v 1.33 2003/09/24 > 19:20:23 des Exp $ > > # This is the sshd server system-wide configuration file. See > # sshd_config(5) for more information. > > # This sshd was compiled with PATH=/usr/bin:/bin:/usr/sbin:/sbin > > # The strategy used for options in the default sshd_config shipped with > # OpenSSH is to specify options with their default value where > # possible, but leave them commented. Uncommented options change a > # default value. > > # Note that some of FreeBSD's defaults differ from OpenBSD's, and > # FreeBSD has a few additional options. > > #VersionAddendum FreeBSD-20030924 > > Port 22 > Protocol 2 > #ListenAddress 0.0.0.0 > #ListenAddress :: > > # HostKey for protocol version 1 > #HostKey /etc/ssh/ssh_host_key > # HostKeys for protocol version 2 > #HostKey /etc/ssh/ssh_host_dsa_key > > # Lifetime and size of ephemeral version 1 server key > #KeyRegenerationInterval 3600 > #ServerKeyBits 768 > > # Logging > #obsoletes QuietMode and FascistLogging > #SyslogFacility AUTH > #LogLevel INFO > > # Authentication: > > #LoginGraceTime 120 > PermitRootLogin no > StrictModes yes > > RSAAuthentication no > PubkeyAuthentication yes > #AuthorizedKeysFile .ssh/authorized_keys > > # rhosts authentication should not be used > RhostsAuthentication no > # Don't read the user's ~/.rhosts and ~/.shosts files > #IgnoreRhosts yes > # For this to work you will also need host keys in > /etc/ssh/ssh_known_hosts > #RhostsRSAAuthentication no > # similar for protocol version 2 > #HostbasedAuthentication no > # Change to yes if you don't trust ~/.ssh/known_hosts for > # RhostsRSAAuthentication and HostbasedAuthentication > #IgnoreUserKnownHosts no > > # To disable tunneled clear text passwords, change to no here! > PasswordAuthentication no > PermitEmptyPasswords no > > # Change to no to disable PAM authentication > #ChallengeResponseAuthentication yes > > # Kerberos options > KerberosAuthentication no > KerberosOrLocalPasswd no > #KerberosTicketCleanup yes > > #AFSTokenPassing no > > # Kerberos TGT Passing only works with the AFS kaserver > #KerberosTgtPassing no > > X11Forwarding yes > #X11DisplayOffset 10 > #X11UseLocalhost yes > #PrintMotd yes > #PrintLastLog yes > #KeepAlive yes > #UseLogin no > #UsePrivilegeSeparation yes > #PermitUserEnvironment no > #Compression yes > > #MaxStartups 10 > # no default banner path > #Banner /some/path > #VerifyReverseMapping no > > # override default of no subsystems > Subsystem sftp /usr/libexec/sftp-server > > > > > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to > "freebsd-questions-unsubscribe@freebsd.org" > >
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